CDLL4902

Single Zener Diodes Overview

The CDLL4902 is a temperature-compensated Zener diode manufactured by Microchip Technology. It provides a nominal Zener voltage of 12.8 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 500 mW and operates within an extended junction temperature range from -65°C to +175°C. It features a low voltage temperature coefficient of 0.01%/°C, ensuring stable regulation across thermal variations. The component utilizes the DO-213AA-2 surface-mount package.

Single Zener Diodes Feature Summary

• Temperature compensated design for stable voltage regulation
• Extended operating temperature range suitable for harsh environments
• Surface-mount construction in a compact leadless package

Single Zener Diodes Applications

• Precision voltage reference circuits
• Temperature-stable regulator applications
• Industrial control systems requiring wide thermal operation

Single Zener Diodes Procurement Notes

Verify compliance requirements as this component may not meet RoHS standards. Confirm package integrity upon receipt, as the DO-213AA-2 form factor requires specific handling. Ensure that the 500 mW power rating is sufficient for the intended circuit load to prevent thermal failure during continuous operation.

Single Zener Diodes Selection Notes

Select this component when precise voltage stability over temperature is critical. The 12.8 V output suits mid-range reference needs. Consider the DO-213AA-2 footprint for PCB layout constraints. Evaluate the 0.01%/°C coefficient against alternative standard Zeners if tighter thermal drift compensation is required for the specific application environment.

Single Zener Diodes Part Context

This part belongs to Microchip's CDLL series of hermetically sealed or robust surface-mount Zener diodes. It serves as a specialized variant within the broader 1N4902 family, offering enhanced thermal performance characteristics compared to standard general-purpose regulators. The series targets applications demanding reliability under extreme environmental conditions.

Single Zener Diodes Replacement Considerations

CDLL4902A/TR is a documented parameter-equivalent substitute within the same manufacturer portfolio.